12721256351 has 2 divisors, whose sum is σ = 12721256352. Its totient is φ = 12721256350.

The previous prime is 12721256311. The next prime is 12721256357. The reversal of 12721256351 is 15365212721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12721256351 - 2⁶ = 12721256287 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12721256357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6360628175 + 6360628176.

It is an arithmetic number, because the mean of its divisors is an integer number (6360628176).

Almost surely, 2^12721256351 is an apocalyptic number.

12721256351 is a deficient number, since it is larger than the sum of its proper divisors (1).

12721256351 is an equidigital number, since it uses as much as digits as its factorization.

12721256351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 35.

The spelling of 12721256351 in words is "twelve billion, seven hundred twenty-one million, two hundred fifty-six thousand, three hundred fifty-one".